Cities: Skylines - Airports DLC EU Steam

The Airports expansion allows you to build your own airport areas, set up gates and connect them via concourse networks. Design your dream airports, from small airfields to large international hubs.

About the base game:

Cities: Skylines is a modern take on the classic city simulation. The game introduces new gameplay elements to realize the thrill and hardships of creating and maintaining a real city whilst expanding on some well-established tropes of the city building experience.

From the makers of the Cities in Motion franchise, the game boasts a fully realized transport system. It also includes the ability to mod the game to suit your play style as a fine counterbalance to the layered and challenging simulation. You’re only limited by your imagination, so take control and reach for the sky!